#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int main() 
{

    double a = 0, b = 0;
    int n = 0;
    double sum = 0, k;

    scanf("%lf %d %lf", &a, &n, &b);

    if (n == 0) 
    {
        sum = a * 2.455;
    }
    else 
    {
        sum = a * 1.26;
    }

    k = b / sum;

    if (k > 1) 
    {
        printf("%.2lf ^_^", sum);
    }
    else 
    {
        printf("%.2lf T_T", sum);
    }
    return 0;
}